Libous is due back in court Jan. 9. A trial date has not yet been set.

Thomas Libous and his son, Matthew Libous, were indicted in connection with a federal investigation into allegations that the senator helped his son obtain a job at a politically connected Westchester County law firm. The son has been charged with various tax-evasion charges.

The senator's indictment charges him with one count of making false statements to the FBI, alleging he provided false information during a June 24, 2010, interview with agents.

If convicted, Thomas Libous faces up to five years in prison. Libous said he's innocent of the charge.